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- 5 million downloads and counting - 90+% Five Star Reviews - Hosted by Astronomer At Large, Professor Fred Watson and Sci-Author/Broadcaster Andrew Dunkley - 660 Episodes and counting -...
show more- 5 million downloads and counting
- 90+% Five Star Reviews
- Hosted by Astronomer At Large, Professor Fred Watson and Sci-Author/Broadcaster Andrew Dunkley
- 660 Episodes and counting
- Very active (and friendly) listener community
- Advertising Free options available.
Space Nuts: Astronomy Insights & Cosmic Discoveries
Space Nuts: Astronomy Insights & Cosmic Discoveries
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17 OCT 2026 · Space Nuts: Lunar Magnetism, Exoplanet Signals, and the Evolution of Spacecraft Windows
In this captivating episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson dive into a range of fascinating astronomical topics. The episode kicks off with an exploration of lunar magnetism, as they discuss new findings suggesting that the Moon may have once possessed a primordial magnetic field, stemming from solidified magma beneath its surface. The duo then shifts gears to a groundbreaking discovery of radio signals originating from the exoplanet Beta Pictoris B, revealing the presence of auroras on this distant gas giant. Finally, they examine the evolution of spacecraft windows, highlighting the importance of visibility for astronauts and the advancements in window technology over the decades. Join Andrew and Fred Watson as they unravel these cosmic mysteries with their signature blend of humour and insight.
Key topics
- The Moon's magnetic history and the implications of recent research on its geological structure.
- Detection of auroras on exoplanets through radio signals and what it means for our understanding of planetary atmospheres.
- The evolution of spacecraft windows: from early designs to modern innovations and safety considerations.
Timestamps
00:00 - Introduction and overview of today's topics
01:20 - Discussion on lunar magnetism and the Moon's geological history
15:30 - Discovery of radio signals from exoplanet Beta Pictoris B and the significance of auroras
25:00 - Evolution of spacecraft windows and their importance for astronauts
35:15 - A unique photo capturing the International Space Station and a plane against the sun
45:00 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
17 OCT 2026 · Space Nuts: Lunar Magnetism, Exoplanet Signals, and the Evolution of Spacecraft Windows
In this captivating episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson dive into a range of fascinating astronomical topics. The episode kicks off with an exploration of lunar magnetism, as they discuss new findings suggesting that the Moon may have once possessed a primordial magnetic field, stemming from solidified magma beneath its surface. The duo then shifts gears to a groundbreaking discovery of radio signals originating from the exoplanet Beta Pictoris B, revealing the presence of auroras on this distant gas giant. Finally, they examine the evolution of spacecraft windows, highlighting the importance of visibility for astronauts and the advancements in window technology over the decades. Join Andrew and Fred Watson as they unravel these cosmic mysteries with their signature blend of humour and insight.
Key topics
- The Moon's magnetic history and the implications of recent research on its geological structure.
- Detection of auroras on exoplanets through radio signals and what it means for our understanding of planetary atmospheres.
- The evolution of spacecraft windows: from early designs to modern innovations and safety considerations.
Timestamps
00:00 - Introduction and overview of today's topics
01:20 - Discussion on lunar magnetism and the Moon's geological history
15:30 - Discovery of radio signals from exoplanet Beta Pictoris B and the significance of auroras
25:00 - Evolution of spacecraft windows and their importance for astronauts
35:15 - A unique photo capturing the International Space Station and a plane against the sun
45:00 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Transcribed
13 OCT 2026 · Sponsor Link:
This episode of Space Nuts is brought to you by NordVPN. Protect your online privacy today by visiting https://www.nordvpn.com/spacenuts for an exclusive offer!
Space Nuts: Fast-Moving Planets, Photon Pressure, and the Nature of Moons
In this engaging Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a series of intriguing listener questions. Kicking off with Ron's query about the implications of living on a super fast-moving planet orbiting Sagittarius A*, they delve into the fascinating world of time dilation and its effects on scientific observations. Next, Jeff from Colorado poses a thought-provoking question regarding photon pressure and its potential influence on the universe's expansion, leading to a discussion on dark energy and cosmic mysteries. Brian from the Gold Coast wonders about the visibility of cosmic microwave background radiation behind black holes, while Bob rounds off the episode with a query on the characteristics that define a moon. Join Andrew and Fred Watson as they navigate these cosmic curiosities with their trademark wit and insight.
Key topics
- The effects of high-speed planetary motion near a black hole on time and observational science.
- Exploring photon pressure and its relationship to the universe's expansion and dark energy.
- The cosmic microwave background radiation and its interaction with black holes.
- Defining moons: How small and irregular can they be while still being classified as moons?
Timestamps
00:00 - Introduction and overview of listener questions
01:20 - Ron’s question about living on a fast-moving planet and time dilation effects
15:30 - Jeff’s inquiry into photon pressure and its impact on cosmic expansion
25:00 - Brian’s question regarding cosmic microwave background radiation and black holes
35:15 - Bob’s exploration of what constitutes a moon
45:00 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
13 OCT 2026 · Space Nuts: Fast-Moving Planets, Photon Pressure, and the Nature of Moons
In this engaging Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a series of intriguing listener questions. Kicking off with Ron's query about the implications of living on a super fast-moving planet orbiting Sagittarius A*, they delve into the fascinating world of time dilation and its effects on scientific observations. Next, Jeff from Colorado poses a thought-provoking question regarding photon pressure and its potential influence on the universe's expansion, leading to a discussion on dark energy and cosmic mysteries. Brian from the Gold Coast wonders about the visibility of cosmic microwave background radiation behind black holes, while Bob rounds off the episode with a query on the characteristics that define a moon. Join Andrew and Fred Watson as they navigate these cosmic curiosities with their trademark wit and insight.
Key topics
- The effects of high-speed planetary motion near a black hole on time and observational science.
- Exploring photon pressure and its relationship to the universe's expansion and dark energy.
- The cosmic microwave background radiation and its interaction with black holes.
- Defining moons: How small and irregular can they be while still being classified as moons?
Timestamps
00:00 - Introduction and overview of listener questions
01:20 - Ron’s question about living on a fast-moving planet and time dilation effects
15:30 - Jeff’s inquiry into photon pressure and its impact on cosmic expansion
25:00 - Brian’s question regarding cosmic microwave background radiation and black holes
35:15 - Bob’s exploration of what constitutes a moon
45:00 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Transcribed
12 OCT 2026 · Sponsor Link:
This episode of Space Nuts is brought to you with the support of NordVPN. To check out our special money-saving deal, visit https://www.nordvpn.com/spacenuts
Space Nuts: Unraveling the Mysteries of NGC 4698 and Chariklo's Rings
In this exciting episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson explore some truly peculiar cosmic phenomena. They kick off with a deep dive into the strange behaviour of the galaxy NGC 4698, known for its unusual rotational patterns and mysterious bulge, leading to discussions about possible galactic mergers. Next, the duo ventures into the intriguing world of Chariklo, a centaur object with changing rings, as they discuss the latest observations from the James Webb Space Telescope and the implications of its unique ring structure. Join Andrew and Fred Watson as they navigate these captivating astronomical tales with their signature blend of humour and insight.
Key topics
- The peculiar characteristics of NGC 4698: What makes this galaxy behave strangely?
- Insights into the dynamics of galaxy mergers and their effects on structure.
- Chariklo's rings: How have they changed since their discovery, and what does this mean for our understanding of ring systems?
- The potential existence of a hidden moon influencing the structure of Chariklo's rings.
Timestamps
00:00 - Introduction and overview of today's topics
01:20 - Discussion on the peculiar galaxy NGC 4698 and its unusual features
15:30 - Exploring Chariklo and the changes in its ring system
25:00 - Insights from the James Webb Space Telescope and the hidden moon hypothesis
35:15 - Final thoughts and listener engagement
Wanting a commercial free option of Space Nuts? Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Supporters Club
11 OCT 2026 · Space Nuts: Unraveling the Mysteries of NGC 4698 and Chariklo's Rings
In this exciting episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson explore some truly peculiar cosmic phenomena. They kick off with a deep dive into the strange behaviour of the galaxy NGC 4698, known for its unusual rotational patterns and mysterious bulge, leading to discussions about possible galactic mergers. Next, the duo ventures into the intriguing world of Chariklo, a centaur object with changing rings, as they discuss the latest observations from the James Webb Space Telescope and the implications of its unique ring structure. Join Andrew and Fred Watson as they navigate these captivating astronomical tales with their signature blend of humour and insight.
Key topics
- The peculiar characteristics of NGC 4698: What makes this galaxy behave strangely?
- Insights into the dynamics of galaxy mergers and their effects on structure.
- Chariklo's rings: How have they changed since their discovery, and what does this mean for our understanding of ring systems?
- The potential existence of a hidden moon influencing the structure of Chariklo's rings.
Timestamps
00:00 - Introduction and overview of today's topics
01:20 - Discussion on the peculiar galaxy NGC 4698 and its unusual features
15:30 - Exploring Chariklo and the changes in its ring system
25:00 - Insights from the James Webb Space Telescope and the hidden moon hypothesis
35:15 - Final thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Transcribed
9 OCT 2026 · Sponsor Link:
This episode of Space Nuts is brought to you by NordVPN. Protect your online privacy today by visiting https://www.nordvpn.com/spacenuts for an exclusive offer!
Space Nuts: Time Travel, Orbiting Telescopes, and Gold Origins
In this Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a range of thought-provoking listener questions. They begin with a fascinating inquiry from Andy, a train driver in the UK, about the implications of time travel at relativistic speeds. What does it mean to age differently when travelling close to the speed of light? The duo then dives into the mechanics of orbiting telescopes, addressing Nick's questions about how these instruments manage their observations while minimising interruptions from Earth. Finally, Ash from Brisbane poses an intriguing question about the origins of gold, prompting a discussion on neutron star collisions and the cosmic processes that create heavy elements.
Key topics
- Time travel and the effects of relativistic speeds on aging: Can we really travel through time?
- The scheduling and operational strategies of orbiting telescopes like Hubble: How do they maximise observation time?
- The origins of gold in the universe: What role do neutron star collisions play in the creation of heavy elements?
Timestamps
00:00 - Introduction and overview of listener questions
01:20 - Andy’s question on time travel and relativistic speeds
15:30 - Nick’s inquiry about orbiting telescopes and their observation strategies
25:00 - Ash’s question regarding the origins of gold and neutron star collisions
35:15 - Final thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
9 OCT 2026 · Space Nuts: Time Travel, Orbiting Telescopes, and Gold Origins
In this Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a range of thought-provoking listener questions. They begin with a fascinating inquiry from Andy, a train driver in the UK, about the implications of time travel at relativistic speeds. What does it mean to age differently when travelling close to the speed of light? The duo then dives into the mechanics of orbiting telescopes, addressing Nick's questions about how these instruments manage their observations while minimising interruptions from Earth. Finally, Ash from Brisbane poses an intriguing question about the origins of gold, prompting a discussion on neutron star collisions and the cosmic processes that create heavy elements.
Key topics
- Time travel and the effects of relativistic speeds on aging: Can we really travel through time?
- The scheduling and operational strategies of orbiting telescopes like Hubble: How do they maximise observation time?
- The origins of gold in the universe: What role do neutron star collisions play in the creation of heavy elements?
Timestamps
00:00 - Introduction and overview of listener questions
01:20 - Andy’s question on time travel and relativistic speeds
15:30 - Nick’s inquiry about orbiting telescopes and their observation strategies
25:00 - Ash’s question regarding the origins of gold and neutron star collisions
35:15 - Final thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Transcribed
9 OCT 2026 · Sponsor Link:
This episode of Space Nuts is brought to you with the support of NORDVPN. Get your privacy in order today. To check out our special offer and support the show, visit https://www.nordvpn.com/spacenuts
Space Nuts: Space Force Weapons, Purple Mars, and New Lunar Crater
In this episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson delve into some fascinating and thought-provoking topics. They kick off with the recent revelation about the existence of weapons in orbit around Earth, a significant admission from the United States that raises questions about the future of space security. The conversation shifts to Mars, where stunning new images suggest that we might need to reconsider its nickname as the "Red Planet" due to striking purple hues observed in its southern regions. Finally, the duo discusses a newly discovered crater on the Moon, the largest of its kind in recent history, and what this means for our understanding of lunar impacts and surface changes.
Key topics
- The United States acknowledges the presence of weapons in space, sparking discussions about the implications for global security and the arms race in orbit.
- An exploration of Mars' changing colour palette, with new images revealing purple landscapes that challenge our traditional views of the planet.
- The discovery of a significant new crater on the Moon, highlighting the ongoing geological activity and impact history of our celestial neighbour.
Timestamps
00:00 - Introduction and overview of topics
01:20 - Discussion on weapons in orbit and implications for space security
15:30 - Mars as the "Purple Planet" and the significance of new imagery
25:00 - New lunar crater discovery and its implications for lunar geology
35:15 - Closing thoughts and listener engagement
Become a supporter of this podcast:Â https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Supporters Club
9 OCT 2026 · Space Nuts: Space Force Weapons, Purple Mars, and New Lunar Crater
In this episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson delve into some fascinating and thought-provoking topics. They kick off with the recent revelation about the existence of weapons in orbit around Earth, a significant admission from the United States that raises questions about the future of space security. The conversation shifts to Mars, where stunning new images suggest that we might need to reconsider its nickname as the "Red Planet" due to striking purple hues observed in its southern regions. Finally, the duo discusses a newly discovered crater on the Moon, the largest of its kind in recent history, and what this means for our understanding of lunar impacts and surface changes.
Key topics
- The United States acknowledges the presence of weapons in space, sparking discussions about the implications for global security and the arms race in orbit.
- An exploration of Mars' changing colour palette, with new images revealing purple landscapes that challenge our traditional views of the planet.
- The discovery of a significant new crater on the Moon, highlighting the ongoing geological activity and impact history of our celestial neighbour.
Timestamps
00:00 - Introduction and overview of topics
01:20 - Discussion on weapons in orbit and implications for space security
15:30 - Mars as the "Purple Planet" and the significance of new imagery
25:00 - New lunar crater discovery and its implications for lunar geology
35:15 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
17 OCT 2026 · Space Nuts: Lunar Magnetism, Exoplanet Signals, and the Evolution of Spacecraft Windows
In this captivating episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson dive into a range of fascinating astronomical topics. The episode kicks off with an exploration of lunar magnetism, as they discuss new findings suggesting that the Moon may have once possessed a primordial magnetic field, stemming from solidified magma beneath its surface. The duo then shifts gears to a groundbreaking discovery of radio signals originating from the exoplanet Beta Pictoris B, revealing the presence of auroras on this distant gas giant. Finally, they examine the evolution of spacecraft windows, highlighting the importance of visibility for astronauts and the advancements in window technology over the decades. Join Andrew and Fred Watson as they unravel these cosmic mysteries with their signature blend of humour and insight.
Key topics
- The Moon's magnetic history and the implications of recent research on its geological structure.
- Detection of auroras on exoplanets through radio signals and what it means for our understanding of planetary atmospheres.
- The evolution of spacecraft windows: from early designs to modern innovations and safety considerations.
Timestamps
00:00 - Introduction and overview of today's topics
01:20 - Discussion on lunar magnetism and the Moon's geological history
15:30 - Discovery of radio signals from exoplanet Beta Pictoris B and the significance of auroras
25:00 - Evolution of spacecraft windows and their importance for astronauts
35:15 - A unique photo capturing the International Space Station and a plane against the sun
45:00 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
13 OCT 2026 · Space Nuts: Fast-Moving Planets, Photon Pressure, and the Nature of Moons
In this engaging Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a series of intriguing listener questions. Kicking off with Ron's query about the implications of living on a super fast-moving planet orbiting Sagittarius A*, they delve into the fascinating world of time dilation and its effects on scientific observations. Next, Jeff from Colorado poses a thought-provoking question regarding photon pressure and its potential influence on the universe's expansion, leading to a discussion on dark energy and cosmic mysteries. Brian from the Gold Coast wonders about the visibility of cosmic microwave background radiation behind black holes, while Bob rounds off the episode with a query on the characteristics that define a moon. Join Andrew and Fred Watson as they navigate these cosmic curiosities with their trademark wit and insight.
Key topics
- The effects of high-speed planetary motion near a black hole on time and observational science.
- Exploring photon pressure and its relationship to the universe's expansion and dark energy.
- The cosmic microwave background radiation and its interaction with black holes.
- Defining moons: How small and irregular can they be while still being classified as moons?
Timestamps
00:00 - Introduction and overview of listener questions
01:20 - Ron’s question about living on a fast-moving planet and time dilation effects
15:30 - Jeff’s inquiry into photon pressure and its impact on cosmic expansion
25:00 - Brian’s question regarding cosmic microwave background radiation and black holes
35:15 - Bob’s exploration of what constitutes a moon
45:00 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
11 OCT 2026 · Space Nuts: Unraveling the Mysteries of NGC 4698 and Chariklo's Rings
In this exciting episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson explore some truly peculiar cosmic phenomena. They kick off with a deep dive into the strange behaviour of the galaxy NGC 4698, known for its unusual rotational patterns and mysterious bulge, leading to discussions about possible galactic mergers. Next, the duo ventures into the intriguing world of Chariklo, a centaur object with changing rings, as they discuss the latest observations from the James Webb Space Telescope and the implications of its unique ring structure. Join Andrew and Fred Watson as they navigate these captivating astronomical tales with their signature blend of humour and insight.
Key topics
- The peculiar characteristics of NGC 4698: What makes this galaxy behave strangely?
- Insights into the dynamics of galaxy mergers and their effects on structure.
- Chariklo's rings: How have they changed since their discovery, and what does this mean for our understanding of ring systems?
- The potential existence of a hidden moon influencing the structure of Chariklo's rings.
Timestamps
00:00 - Introduction and overview of today's topics
01:20 - Discussion on the peculiar galaxy NGC 4698 and its unusual features
15:30 - Exploring Chariklo and the changes in its ring system
25:00 - Insights from the James Webb Space Telescope and the hidden moon hypothesis
35:15 - Final thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
9 OCT 2026 · Space Nuts: Time Travel, Orbiting Telescopes, and Gold Origins
In this Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a range of thought-provoking listener questions. They begin with a fascinating inquiry from Andy, a train driver in the UK, about the implications of time travel at relativistic speeds. What does it mean to age differently when travelling close to the speed of light? The duo then dives into the mechanics of orbiting telescopes, addressing Nick's questions about how these instruments manage their observations while minimising interruptions from Earth. Finally, Ash from Brisbane poses an intriguing question about the origins of gold, prompting a discussion on neutron star collisions and the cosmic processes that create heavy elements.
Key topics
- Time travel and the effects of relativistic speeds on aging: Can we really travel through time?
- The scheduling and operational strategies of orbiting telescopes like Hubble: How do they maximise observation time?
- The origins of gold in the universe: What role do neutron star collisions play in the creation of heavy elements?
Timestamps
00:00 - Introduction and overview of listener questions
01:20 - Andy’s question on time travel and relativistic speeds
15:30 - Nick’s inquiry about orbiting telescopes and their observation strategies
25:00 - Ash’s question regarding the origins of gold and neutron star collisions
35:15 - Final thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
9 OCT 2026 · Space Nuts: Space Force Weapons, Purple Mars, and New Lunar Crater
In this episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson delve into some fascinating and thought-provoking topics. They kick off with the recent revelation about the existence of weapons in orbit around Earth, a significant admission from the United States that raises questions about the future of space security. The conversation shifts to Mars, where stunning new images suggest that we might need to reconsider its nickname as the "Red Planet" due to striking purple hues observed in its southern regions. Finally, the duo discusses a newly discovered crater on the Moon, the largest of its kind in recent history, and what this means for our understanding of lunar impacts and surface changes.
Key topics
- The United States acknowledges the presence of weapons in space, sparking discussions about the implications for global security and the arms race in orbit.
- An exploration of Mars' changing colour palette, with new images revealing purple landscapes that challenge our traditional views of the planet.
- The discovery of a significant new crater on the Moon, highlighting the ongoing geological activity and impact history of our celestial neighbour.
Timestamps
00:00 - Introduction and overview of topics
01:20 - Discussion on weapons in orbit and implications for space security
15:30 - Mars as the "Purple Planet" and the significance of new imagery
25:00 - New lunar crater discovery and its implications for lunar geology
35:15 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
27 SEP 2026 · Space Nuts: Q&A on Radial Velocity, Dark Matter, and Angular Momentum
In this engaging Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a variety of intriguing listener questions, ranging from the complexities of radial velocity in exoplanet detection to the mysteries of dark matter and angular momentum in black holes. Join them as they explore these cosmic conundrums with their characteristic wit and expertise.
Key topics
- Hussein from Yemen asks about the radial velocity method for detecting exoplanets, prompting a discussion on how astronomers can isolate individual planets from the combined gravitational effects of multiple bodies.
- Martin from Maryland raises a thought-provoking question on the potential to harness dark energy for space flight, leading to an exploration of the feasibility of accelerating spacecraft to near-light speeds.
- Peter from Sweden inquires about the angular momentum of matter falling into black holes, sparking a conversation on whether this matter retains its momentum or needs to shed some energy before crossing the event horizon.
- Andrew and Fred Watson also touch on the ongoing search for Planet Nine and the importance of surveying exoplanets for understanding the universe's structure and potential for life beyond Earth.
Timestamps
00:00 - Introduction to the Q&A format and listener questions
01:20 - Hussein's question about radial velocity and exoplanets
10:30 - Martin's inquiry on harnessing dark energy for space travel
18:45 - Peter's question about angular momentum and black holes
26:00 - Discussion on the significance of ongoing exoplanet surveys
32:15 - Closing thoughts and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
23 SEP 2026 · Space Nuts: Water on Mars, Moon Water Limits, and Hunting for Ocean Worlds
Andrew Dunkley and Professor Fred Watson unpack three space science stories tied together by one big theme: water, and where it might be hiding in the solar system. They also answer audience questions on exoplanet detection, dark energy, black holes, and the role of AI in astronomy.
In this episode, Andrew hosts and Fred Watson explains the science across a wide-ranging Q and A format, with contributions from listeners Hussein, Martin, Peter, Dave, James, and others in the live audience. The main topics are Mars gullies, lunar water supply for future settlements, and methods for spotting ocean worlds around distant stars.
Key topics
In this episode: new research suggests Martian gullies may be shaped by dry ice, not liquid water, through a process Fred likens to an air hockey effect.
The Mars discussion explains why older water-based theories struggle, especially in polar regions where temperatures and pressure make liquid water impossible.
The team compares two dry-ice mechanisms for Mars gullies, including a geyser-like burst model and a slower sliding sheet model, with the latter favored.
In this episode: a lunar water study raises doubts about whether there is enough usable water at the Moon’s south pole to support large permanent cities.
Fred explains why the south polar craters are so important for Artemis-style exploration, but also why the terrain is difficult and the water supply may be limited.
The conversation notes that a village-scale lunar base may be feasible, but a city of tens of thousands or hundreds of thousands looks unrealistic on current estimates.
In this episode: the show turns to exoplanets and a new way to look for ocean worlds using glint, the same reflection effect that helped reveal liquid seas on Titan.
Fred describes how coronagraphs and direct imaging could help identify Hycean worlds, though the method only works under strict geometric and observational conditions.
Audience questions cover radial velocity detection, including how astronomers separate multiple planets in a star’s wobble using precise measurements and Fourier analysis.
Another listener asks about dark energy as a propulsion source, and Fred argues the energy density is far too small on any practical scale to power spacecraft.
Peter’s black hole question leads to a discussion of angular momentum, with Fred confirming later that accreted material does add angular momentum to a black hole.
A final discussion touches on AI in astronomy and SETI, including data analysis, paper marking, and the idea that extraterrestrial intelligence itself might be AI.
Timestamps
00:00 - Opening banter and setup for a water-themed episode
01:22 - Mars gullies and the question of whether water is really responsible
04:40 - Why Mars gullies are tricky to explain with Earth-like assumptions
05:23 - Early water-based theories for Martian gullies
06:44 - Why polar gullies rule out liquid water
08:11 - Dry ice on Mars and the shift to carbon dioxide mechanisms
09:07 - Geyser-like dry ice bursts and why the idea was rejected
11:31 - The favored sliding dry-ice sheet model
13:05 - The air hockey analogy for Martian gullies
14:30 - Lunar water and the challenge of building settlements on the Moon
16:03 - Shackleton Crater and the south polar water-ice theory
17:30 - Why the Moon may not have enough water for a large city
19:29 - The Chang’e 7 hopper and future lunar prospecting
22:20 - Recycling, imported water, and using lunar water as rocket fuel
24:07 - Looking for ocean worlds beyond the solar system
25:50 - How Cassini detected Titan’s liquid lakes by sun glint
27:09 - What counts as a Hycean world
28:08 - The University of Arizona study on glint geometry
29:35 - Why direct imaging and coronagraphs matter
30:32 - How the Habitable Worlds Observatory could use the technique Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
20 SEP 2026 · Space Nuts: Q&A on BepiColombo, Neutrinos, and Time Dilation
In this Q&A edition of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson dive into a series of intriguing listener questions that span topics from the nuances of orbital velocity to the enigmatic world of neutrinos and the complexities of time dilation. Join them as they unravel these cosmic queries with their signature blend of insight and humour.
Key topics
- Larry from Nebraska asks about the BepiColombo mission and the relationship between gravitational assists and orbital velocity, prompting a discussion on how spacecraft navigate the solar system.
- Eduardo explores the nature of neutrinos, questioning whether they are affected by gravity and whether they can be trapped by black holes.
- Shumo presents a thought-provoking idea about using high-energy gamma rays or neutrinos as interstellar beacons, leading to a discussion on the potential for advanced civilisations to communicate through unconventional means.
- Colin from Adelaide raises questions about time dilation effects as depicted in the science fiction movie "Project Hail Mary," specifically the implications of travelling close to the speed of light and the resulting age differences upon return to Earth.
Timestamps
00:00 - Introduction to the Q&A format and listener interactions
01:20 - Larry's question about BepiColombo and gravitational assists
10:30 - Eduardo's inquiry on neutrinos and black holes
18:45 - Shumo's question about interstellar beacons using gamma rays or neutrinos
26:00 - Colin's confusion about time dilation in "Project Hail Mary"
32:15 - Discussion on the implications of time dilation and relativity Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
17 SEP 2026 · Space Nuts: Venus’s Missing Moon, Satellite Pollution, and Space Force Uniform Controversy
Space Nuts covers three very different space stories in this episode, ranging from planetary science to the consequences of satellite reentry and a controversial military uniform design. Andrew Dunkley and Professor Fred Watson also field listener questions on orbital mechanics, neutrinos, alien communication, and time dilation.
The discussion is broad, but the main thread is clear: how real-world physics shapes everything from Venus’s history to the future of spaceflight and even the look of space-age uniforms.
Key topics
Venus is Earth-like in size, mass, and gravity, but unlike Earth it has no moon, and the episode explores whether it may once have had one.
Fred explains a modeling study led by Stephen Kane suggesting a Venus moon could have spiraled inward, crossed the Roche limit, and been torn apart by tidal forces.
The team discusses what evidence might remain if Venus once consumed a moon, including possible chemical fingerprints in the atmosphere or surface.
Satellite pollution is examined through the lens of reentering spacecraft, especially the growing number of Starlink reentries and their impact on the upper atmosphere.
The European Space Agency’s jet-based chase of two reentering Cluster spacecraft, Tango and Samba, is described as an effort to measure reentry byproducts directly.
The conversation raises concerns about aluminium oxides, atmospheric chemistry, and whether repeated reentries could have broader consequences such as ozone depletion.
The final main story looks at proposed United States Space Force uniforms and why the design drew immediate comparisons to World War II-era fascist aesthetics and Starship Troopers.
Andrew and Fred note how uniform design can shape perception, and why the new concept feels divisive rather than inspiring. Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
Supporters Club
14 SEP 2026 · Space Nuts: Q&A on Mitsubishi's Role in Telescope Manufacturing, Jupiter's Storms, and Gravitational Waves
In this Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson tackle a range of fascinating listener questions, from the involvement of Mitsubishi Heavy Industries in telescope manufacturing to the mysteries of Jupiter’s storms and the nature of gravitational waves. Join them as they delve into these cosmic queries with their signature wit and expertise.
Key topics
- Thomas from Canberra asks about Mitsubishi Heavy Industries and their role in the manufacturing of telescope hardware at Siding Spring Observatory. Fred Watson explains the engineering behind the Anglo-Australian Telescope and the significance of its construction.
- Young listener Emily poses a question about Jupiter's Great Red Spot, prompting a discussion on the dynamics of storms and atmospheric patterns on the gas giant.
- Butch from the UK inquires about the Parker Solar Probe and its mission to study the sun, as well as the advancements in solar observation technology.
- Trent from North Georgia wonders if gravitational waves are slowed down by passing through matter, leading to an insightful explanation of how these waves interact with the fabric of spacetime.
- The episode wraps up with a lively discussion on the role of artificial intelligence in astronomy and its implications for the future of scientific research.
Timestamps
00:00 - Introduction to the Q&A format and listener interactions
01:20 - Thomas's question about Mitsubishi Heavy Industries and Siding Spring Observatory
10:30 - Emily's question about storms on Jupiter
18:45 - Butch's inquiry on the Parker Solar Probe and solar missions
26:00 - Trent's question about gravitational waves and their speed
32:15 - Discussion on artificial intelligence in astronomy and its impact
40:00 - Closing remarks and listener engagement Become a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.
- 5 million downloads and counting - 90+% Five Star Reviews - Hosted by Astronomer At Large, Professor Fred Watson and Sci-Author/Broadcaster Andrew Dunkley - 660 Episodes and counting -...
show more- 5 million downloads and counting
- 90+% Five Star Reviews
- Hosted by Astronomer At Large, Professor Fred Watson and Sci-Author/Broadcaster Andrew Dunkley
- 660 Episodes and counting
- Very active (and friendly) listener community
- Advertising Free options available.
Information
| Author | bitesz.com |
| Organization | bitesz.com |
| Categories | Astronomy , Natural Sciences , Science |
| Website | www.spacenutspodcast.com |
| spacenuts@bitesz.com |
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